Evaluation of anti-ageing performance of bitumen based on rheological and chemical characterisation

Improving the anti-ageing performance of bitumen plays a vital role in prolonging the service life of bituminous pavement. A bituminous additive for resisting all-weather ageing (BARAA), with excellent anti-ageing performance and fewer side effects, was developed in this study. The service life of bitumen can be doubled by using BARAA. The results show that the anti-ageing index and influence index can quantitatively evaluate the anti-ageing performance of anti-ageing additives. The BARAA was composed of amine antioxidant (1.89% by weight of base bitumen), Ni-containing antioxidant (3%) and hindered amine light stabilisers (0.7%). BARAA effectively delayed the deterioration of bitumen performance during ageing. The Jnr reduction of BARAA-modified bitumen caused by ageing was 17.7% of the base bitumen. At -12°C and -18°C, the S increase of BARAA-modified bitumen caused by ageing was about 35% of the base bitumen. The oxidation during ageing was inhibited. The growth of sulphoxide groups can be curbed by BARAA. After long-term ageng, the aromatic ring increase of BARAA-modified bitumen was 41.1% of the base bitumen. In addition, the increase of average molecular weight and functional group index of BARAA-modified bitumen caused by long-term ageing was 57% and 19.1% of the base bitumen, respectively.

• Record URL:
  • https://doi.org/10.1080/10298436.2023.2213385
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/44544515
• Supplemental Notes:
  • © 2023 Informa UK Limited, trading as Taylor & Francis Group 2023. Abstract reprinted with permission of Taylor & Francis.
• Authors:
  • Liang, Meichen
  • Guo, Meng
  • Tan, Yiqiu
  • He, Shuxin
  • Du, Xiuli
• Publication Date: 2023

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 2213385
• Serial:
  • International Journal of Pavement Engineering
  • Volume: 24
  • Issue Number: 1
  • Publisher: Taylor & Francis
  • ISSN: 1029-8436
  • Serial URL: http://www.tandf.co.uk/journals/titles/10298436.html

Subject/Index Terms

• TRT Terms: Additives; Bitumen; Bituminous pavements; Material aging; Rheological properties; Service life
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01906775
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 4 2024 4:01PM